myself with corrections wrote:
Players also gain the following special action: Pay 3 life: Place a Permanent or Card with super type 'General' that you own in your general zone. Play this ability any time you could play a land.
I knew I forgot something. Is their a 'Phased' zone? it occures to me, that my wording prohibits general phasing...
As for an additiona cost perhaps:
Remove a card in hand from the game, if you can not, remove the top ten cards from your library from the game.
What I would not like to see are costs requiring book keeping or memory. This is my main count against increasing costs is then you have to count how many times it's died. I could see a case for finite lives in that you need a certain number of copies of your general and you leave their 'corpse' where it rests when it dies and bring in a new copy if you choose from your reserve. but that creates it's own rules headaches.
Restricting basics wouldn't be that bad. When I built my deck for the first time I had twice the land I needed and they were all unique mind you, it was three colours. Perhaps, while we're tinkering with the rules, we might re-write the land composition rules, perhaps: A decks lands must all be able to produce, or fetch lands that produce, at least one mana of that decks colours. All colours that may be generated by that land that are not the controling players colours will be treated as colourless. 'Course this still allows a great dearth of forests for Rofellos, eight more. Perhaps not unreasonable? This would also reverse the previous desicions reflecting what fetchlands could be included in a deck.
For the record, in the games I've played with Robs Sliver Queen deck, I've never actually been beaten down by said queen or lost as a direct consequence of his deck, indirect consequences are another matter. Most recently I succomed to Mitchels red deck in a four player game, after Robs board sweeper. Thought, in a duel, I'm fairly certain he'd win with an overwhelming number of sliver tokens, but then, my FNM record would count against any boasts of playskill I'd make. I just found basic land fetch to be a dull play experiance, but I'll openly admit that I'd work to make the format suit my tastes and I have a distaste for basics and to a certain extent board sweepers, though general recursion helps with that somewhat.